Not totalling the items

guys need help i am new to asp.net programming and i cant figure out what could possibly the solution.

ihave two listboxes. the first one contains the items to be selected and added to the other listbox. When i click the add button, the program should count the items that was added on the second list box. I want to put the count in a textbox

here is the code: c#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

the count wont update

your add method adds the selected item to second list box and increments the count variable.. But page level variables loose their value after postback roundtrip cause they are reinitialised every time your page loads.. so your count variable will always hold the value of 0 and when incremented, 1. This wont work...
Why not just use

your add method adds the selected item to second list box and increments the count variable.. But page level variables loose their value after postback roundtrip cause they are reinitialised every time your page loads.. so your count variable will always hold the value of 0 and when incremented, 1. This wont work...
Why not just use

Code:

listbox2.items.count

to get the count of items in second listbox?

is there any remedy if i would choose to use a counter variable? thanks